Nonfog goggles

ABSTRACT

Nonfogging goggles for skiers or the like that includes a pair of spaced apart lenses having a dead air space therebetween and a dehumidifier in the form of a tightly woven wire mesh portion made of a flexible metal of high thermoconductivity.

United States Patent Jon Ivor Allsop 4,114 16th St. #12.1,ub1mck.'lex.79-116 828,294

May 27, 1969 July 13, 1971 [72] Inventor [21] Appl. No. [22] Filed [45]Patented [54] NONFOG GOGGLES 1 Claim, 4 Drawing Figs.

[52 u.s.c| 2/1414, 2/1414 [51] 1nt.C1 A6lf9/02 [50] FieldoiSearch2/14K,14 R,14A14H,14N,14P,14W,10,3,6,9; 352/66; 351/62 [56] ReferencesCited UNITED STATES PATENTS 2,619,644 12/1952 Christensenetal. 2/14K3,325,825 6/1967 Christianson et al. 2/14 H 3,377,626 4/1968 Smith. 2/14K FOREIGN PATENTS 139,961 1/1951 Australia 2/l4N 524,064 7/1940 GreatBritain 2/14 K OTHER REFERENCES MANUFACTURING OPTlClAN, V01. 15 No. 6;dtd March, 1962, page 275, copy in class 2, subclass 14 K PrimaryExaminer-H. Hampton Hunter Attorney-Sherman Levy ABSTRACT: Nonfogginggoggles for skiers or the like that includes a pair of spaced apartlenses having a dead air space therebetween and a dehumidifier in theform of a tightly woven wire mesh portion made of a flexible metal ofhigh thermoconductivity.

PATENTEU JUL] 3 I9?! 3591; 864

FIG. 4

INVENTOR JON vI. ALLSOP 1 BY JZWi ATTORNEY Monroe GOGGLES This inventionrelates to goggles, and more particularly to nonfogging goggles for useby skiers or other persons.

The primary object of this invention is to provide goggles which includea double sealed lens that has a dead air space trapped therebetween, andwherein there is also provided a metal strip of a tightly woven metalmesh to provide a condenser for moisture.

Still another object is to provide such nonfog goggles that include twolenses having very dry air sealed therebetween, and wherein there isprovided a dehumidifier in the web between the lenses and the face seal,the double-sealed lenses being provided with a compound curve which willprovide rigidity and strength to the lens to withstand the difference inpressures inside and out that occur with the changes in altitude and thelike.

Still another object is to provide a nonfog goggles that is economicalto produce or use and which is rugged in structure.

These and other objects of the invention will become apparent from areading of the following specification and claims, and wherein likecharacters are referred to by like reference numerals, and wherein:

FIG. 1 is a top plan of the nonfog goggles of the present invention.

H6. 2 is a front elevational view.

PK]. 3 is a sectional view taken on the line 33 of FIG. 2.

FIG. 4 is a sectional view taken on the line 4-4 of FIG. 2.

Referring in detail to the drawings, the numeral indicates the nonfoggoggles of the present invention that includes a frame 11 made of asuitable material such as rubber, plastic or the like, and the frame 11embodies a face-engaging body portion 12 which has a recessed section 13for snugly receiving or engaging the skiers nose. The frame 11 furtherincludes an outer support portion 14, FIG. 3, and a crosspiece 15 mayintegrally join the intermediate top sections of the portions 12 and 14together. The portions 12 and 14 may also be connected by means ofbraces 16 which are arranged at the sides of the goggles, and braces 17are adapted to extend between the support portion 14 and face-engagingportion 12 for maintaining these parts in proper spaced apartrelationship.

The nonfogging goggles of the present invention further includes adouble lens that is indicated generally by the numeral 18, and thedouble lens 18 includes inner and outer transparent panels or elements19 and 20 which are sealed together at their outer peripheries as at 21.The numeral 22 indicates a dead air space between the transparent panels19 and 20 for a purpose to be later described.

There is further provided a dehumidifier 23 which is interposed betweenthe portions 12 and 14 and which is secured thereto, and a dehumidifier23 is adapted to be in the form of a very flexible, very tightly wovenwire mesh made of flexible material of high thermoconductivity.

As shown in the drawings, an important feature of the present inventionis that the double sealed lens 18 has a compound curve which providesrigidity and strength to the lens so as to assure that it will withstandthe differences in pressure inside and out that occur with changes inaltitude and the like. It is to be understood that the nonfog goggles ofthe present invention may be provided with a suitable strip or the likefor engagement with the user's face to retain or maintain the goggles inproper place on the face or the head of the user.

From the foregoing, it will be seen that there has been provided nonfoggoggles, and with the parts in use as shown in the drawings, the goggles10 are adapted to be held on the skiers or other person's head by meansof a suitable strip so that the portion 12 snugly engages the wearer'sface, and the recessed portion 13 may snugly engage the nose of thewearer. The outer or support portion is interconnected to the innerportion 12 by means of integral crosspieces or pieces such as indicatedby the numerals l5, l6 and 17. The goggles 10 include the double lens 18that consists of the pair of spaced apart elements 20 that have the deadair space 22 therebetween, and the outer periphery of the outer lens 13is molded or secured to the portion 14, as shown in FlGS.3 and 4. Also,the members 19 and 20 are secured together at their outer peripheries asindicated by the numeral 21. The goggles 10 further include thedehumidifier 23 which is interposed betweenthe portions 12 and 14, andthe dehumidifier 23 is suitably secured to or molded into place with afirm connection to the portions 12 and 14.

It will be understood that the parts can be made of any suitablematerial and in different shapes or sizes as desired or required.

It will thus be seen that there has been provided nonfog goggles whichwill provide a wind screen that will not fog and thus will overcome asevere problem that occurs when the temperatures are around the freezingpoint and where there is high relative humidity. There are two completeaspects or fea- 20 tures of the present invention, one of which is thedouble sealed lens 18 that consists of two similar lenses 19 and 20 thatare sealed with a dead air space 23 trapped between them. The air space22 provides insulation so that the inner lens 19 is near the temperatureof the air inside the goggles, and this prevents moisture fromcondensing on the lens.

In addition, the goggles of the present invention have a metal strip ora tightly woven metal mesh in the goggle wall between the lens and theface to provide a place for the moisture to condense on. Because themetal is a much better conductor than the lens, it will be much colderand moisture will condense on the metal instead of condensing on thelens.

The portion such as the portion 12 may be made of soft plastic and mayhave foam rubber secured to the inner surface thereof. The dehumidifier23 may be made of aluminum mesh or the like. There is a seal between thetwo lenses or members 19 and 20 as indicated by the numeral 21.

With the present invention air cannot seep around the seals. Whengoggles are used for skiing they are exposed to altitudes varying fromsea level to 13,000 feet. In prior designs the difference in pressure issufficient to cause the air to leak into the dead air space between thelenses. lf air has a high enough relative humidity and the ambient airis cold enough, it can cause fogging on the inside of the outer lens,and the construction and principles of the present invention overcomesthese difficulties or disadvantages. Thus, there is provided the twolenses which are completely sealed with very dry air in the sealed airspace, and this prevents intralens fogging. This may be accomplished bymolding the lens out of one piece of plastic with a hollow space in themiddle or by joining the lens by melting the outer edges together.

In addition, the goggles of the present invention are not complex norare they bulky. The construction of the dehumidifier is very simple andis adapted to be made of a very flexible, tightly woven wire mesh, andthis is placed in the web between the lenses and the face seal. The meshis tightly woven to keep the snow out but loose enough so that it willbreathe and the moisture that condenses on the wires can escape theambient air. In addition, air will ventilate in through the wire mesh.

pended claims.

What I claim is:

1. ln nonfog goggles for skiers and the like comprising a frame andembodying a face engaging portion having a recessed nose engagingsection, a support portion arranged in spaced apart relation withrespect to said face engaging porframe the support portion and bodyportion, said mesh being tightly woven to keep snow out but loose enoughso that moisture that condenses on the wire mesh can escape to theambient air and wherein air can ventilate inwardly through the mesh,said double lens having very dry air trapped therein to prevent the lensfogging.

1. In nonfog goggles for skiers and the like comprising a frame andembodying a face engaging portion having a recessed nose engagingsection, a support portion arranged in spaced apart relation withrespect to said face engaging portion, said goggles further includingspaced crosspiece means interconnecting the body portion and support, adouble lens embodying a pair of transparent members sealed together attheir outer peripheries and mounted in said support portion, there beinga dead air space between the transparent members, said double lenshaving a compound curvature, a flexible tightly woven wire mesh of highthermoconductivity in the frame the support portion and body portion,said mesh being tightly woven to keep snow out but loose enough so thatmoisture that condenses on the wire mesh can escape to the ambient airand wherein air can ventilate inwardly through the mesh, said doublelens having very dry air trapped therein to prevent the lens fogging.